Weather & Climate in Geraldine, MT

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Geraldine experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 26°F in January while summers reach 71°F in July. The area gets 273 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 16.9 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 26 / among the cleanest air in the country. The city sits at an elevation of 3,145 feet.

Temperature

26°F Jan (-3°C) 71°F Jul (21°C)

Annual Average	46.9°F
	13% below US avg
January Average	26°F (-3°C)
July Average	71°F (21°C)
Sunny Days	273 days/yr

Geography

Elevation	3,145 ft (959 m)
Area	0.6 sq mi (1.5 km²)
Population Density	463/sq mi
Coordinates	47.6020°N, 110.2667°W
Timezone	America/Denver
County	Chouteau County County
Nearest Airport	Great Falls International (GTF) 52 miles away

Precipitation & Snow

Annual Rainfall 16.9"

56% below US avg

Wettest Month (May) 3.23"

Driest Month (Feb) 0.51"

Air Quality

AQI Median	26.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	39.5 / 100
Social Vulnerability	65.4 / 100
Community Resilience	24.9 / 100

Hazard Breakdown

Tornado	Very Low
Earthquake	Very Low
Wildfire	Relatively Low
Flood	Relatively Low
Hail	Very Low
Strong Wind	Very Low
Heat Wave	Very Low
Winter Weather	Relatively Moderate
Lightning	Relatively Low
Ice Storm	Very Low
Drought	Relatively Low
Cold Wave	Relatively Moderate
Landslide	Very Low
Avalanche	Relatively Moderate

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

13 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.

Aug 16, 1994	27 km W of Chester, Montana	M3.9	127 km	5 km
Jun 16, 1999	16 km SSE of Craig, Montana	M3.2	145 km	4 km
Dec 5, 1991	15 km WSW of Hays, Montana	M3.0	110 km	10 km
Jan 1, 2025	28 km ENE of Helena Valley Northeast, Montana	M2.9	137 km	20 km
Sep 15, 2012	23 km SSW of White Sulphur Springs, Montana	M2.9	150 km	8 km
May 6, 2014	10 km SSW of Cascade, Montana	M2.8	122 km	13 km
Apr 11, 2010	33 km ENE of Helena Valley Northeast, Montana	M2.8	130 km	18 km
Jan 1, 2025	28 km ENE of Helena Valley Northeast, Montana	M2.7	135 km	15 km
Oct 16, 2011	Eastern Montana	M2.7	143 km	21 km
Apr 27, 2012	11 km SSW of Craig, Montana	M2.6	148 km	10 km
May 10, 2024	13 km WSW of Cascade, Montana	M2.6	127 km	26 km
Mar 20, 2025	23 km SSE of Craig, Montana	M2.5	140 km	5 km
Feb 25, 2013	28 km WSW of Chester, Montana	M2.5	116 km	18 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

69 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 11 injuries.

Date	Rating	Distance	Path	Fatalities
Jul 5, 1988	EF3	46 km	12.0 mi	0
Jul 5, 1988	EF3	35 km	3.0 mi	0
Jul 5, 1988	EF3	40 km	10.0 mi	0
Jul 8, 2002	EF2	79 km	10.0 mi	0
Aug 14, 1999	EF2	87 km	5.0 mi	0
Jun 25, 1996	EF2	42 km	2.0 mi	0
Apr 24, 1994	EF2	53 km	1.0 mi	0
Apr 24, 1994	EF2	53 km	1.5 mi	0
May 28, 1981	EF2	96 km	1.5 mi	0
Jun 8, 1976	EF2	31 km	0.1 mi	0
Jun 30, 1975	EF2	99 km	0.1 mi	0
Jul 10, 1965	EF2	90 km	2.0 mi	0
Jun 16, 2007	EF1	75 km	5.3 mi	0
Apr 22, 2003	EF1	50 km	2.0 mi	0
Aug 23, 1998	EF1	78 km	3.5 mi	0
Jul 3, 1998	EF1	96 km	0.5 mi	0
Jun 19, 1998	EF1	25 km	1.0 mi	0
Jul 5, 1988	EF1	97 km	0.2 mi	0
Jun 1, 1980	EF1	55 km	0.1 mi	0
Jul 3, 1978	EF1	98 km	1.0 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: TURKEY (25,658 acres, 1990).

Year	Name	Acres Burned	Distance
1990	TURKEY	25,658	69 km
2021	TAYLOR	21,704	49 km
2017	EAST FORK	21,165	87 km
2021	SOUTH MOCCASIN	12,727	73 km
2009	MEISSNER	12,318	18 km
1984	CENTENNIAL	11,775	79 km
1985	SANDPOINT	10,439	91 km
2021	BALSINGER	8,317	82 km
2022	EAGLE CREEK	6,359	77 km
2020	LOUSE CREEK	5,237	63 km
1991	BURNETTEPK	4,644	85 km
1988	LOSTCANYON	4,532	76 km
2020	YOGO	4,429	79 km
2008	CHOUTEAU CO COMPLEX	4,365	41 km
2019	STUCKEY RD MA	4,073	82 km
2008	UNIT 3 MARSH HAZ FUEL REDUCTION	3,333	81 km
1996	COYOTE	3,320	91 km
2020	EAGLE ROCK ROAD	3,129	40 km
2022	BENTON LAKE UNIT 3 AND 4B	2,996	81 km
2007	CHOUTEAU CO ASST	2,646	22 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	26°F (-3°C)	0.8 in
February	27°F (-3°C)	0.5 in	Driest
March	35°F (2°C)	0.9 in
April	44°F (7°C)	1.2 in
May	53°F (12°C)	3.2 in	Wettest
June	62°F (17°C)	2.6 in
July	71°F (21°C)	1.6 in	Warmest
August	68°F (20°C)	1.7 in
September	57°F (14°C)	1.5 in
October	47°F (8°C)	0.9 in
November	33°F (0°C)	0.6 in
December	25°F (-4°C)	0.8 in	Coldest

Geraldine has a seasonal temperature swing of 46°F / from 25°F in December to 71°F in July. Total annual precipitation is 16.3 inches, with May being the wettest month (3.2") and February the driest (0.5").

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